Run Display Tests 59-61 - Agilent Technologies 8719ET Service Manual

Digital Control Troubleshooting
Troubleshooting the GSP (A19) and the Display (A18)

Run Display Tests 59-61

1. Press the following:
PRESET: FACTORY
Preset
SERVICE MENU
System
TESTS DISPLAY TESTS
EXECUTE TEST
2. If the analyzer passes the test, the Test number, description and PASS is
displayed.
3. Press and perform display tests 59 through 61 (substitute the next test number
where was used). Watch for the analyzer display and front panel LEDs to flash.
59
• If the analyzer fails any of the tests (59 through 61), replace the A19 assembly.
• If all of the following is true, replace the A18 display assembly.
— CPU passes the LED test.
— GSP passes all of the internal display tests (59 through 61).
— Power supply checks out.
6-12
Preset
59 x1
CONTINUE
8719ET/20ET/22ET
8719ES/20ES/22ES
RF Network Analyzers
Service Guide